Grignard reagent RMgBr ( P ) reacts with water and forms a gas ( Q ). One gram of Q occupies 1.4 dm^3 at STP. (P) on reaction with dry ice in dry…

Grignard reagent $\displaystyle \mathrm{RMgBr}(\mathrm{P})$ reacts with water and forms a gas ( Q ). One gram of $\displaystyle Q$ occupies $\displaystyle 1.4 \mathrm{dm}^3$ at STP. (P) on reaction with dry ice in dry ether followed by $\displaystyle \mathrm{H}_3 \mathrm{O}^{+}$forms a compound (Z). $\displaystyle 0.1$ mole of (Z) will weigh $\displaystyle \_\_\_\_$ g. (Nearest integer)